On the other hand, certain changes made to MAAC provisions for NON-PARs resulted in an overall increase in the use of customary-charge pricing screens.
The actual charge of a NON-PAR physician for a particular service cannot exceed that physician's MAAC for the service.
The large increase in use of customary screens for NON-PAR services in FSY 1988, as may be observed in Table 6, reflects in good part the impact of this MAAC provision of OBRA 1987.
Although MAAC limits partially account for differentials in the use of, trends in, customary-charge pricing screens by participation status, the primary underlying reason for the difference is that PARs generally have higher actual charges than NON-PARs have for the same MSC services.
This, coupled with the impact of MAAC limits, results in customary-charge pricing screens being used more often than prevailing-charge pricing screens for establishing reasonable prices for NON-PAR services.